CVE-2026-23567

MEDIUM
2026-01-29 [email protected]
6.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:00 vuln.today
CVE Published
Jan 29, 2026 - 09:16 nvd
MEDIUM 6.5

Tags

Windows Buffer Overflow Heap Overflow Integer Overflow Denial Of Service Digital Employee Experience

Description

An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.

Analysis

Denial-of-service in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to crash the NomadBranch.exe service by sending specially crafted UDP packets that trigger a heap buffer overflow. The vulnerability stems from an integer underflow in the UDP command handler that can be exploited without authentication or user interaction. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

33
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: 0

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CVE-2026-23567 vulnerability details – vuln.today
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